caving line的例句大全

There is a certain angle between caving line and coal seam strike.

垮落线与煤层走向是一定角度。

Coal spontaneous combustion prevention and control technology for coal mining terminal line of overlong fully mechanized top coal caving mining face

超长综放工作面终采线处煤炭自燃防治技术

The removal speed of the fully-mechanized coal face with topped caving ( FCFTC) can be increased by pre-excavating finishing cut on terminal mining line.

在停采线位置预掘收作眼，可大幅度提高综放工作面搬迁速度。

study on extraction line technology on condition that the double conveyers in light caving work face

轻放工作面双运输机条件下调采过折线技术研究

Ennis stood as if heart-shot, face grey and deep-lined, grimacing, eyes screwed shut, fists clenched, legs caving, hit the ground on his knees.

埃尼斯的心被狠狠地击中了。他面如死灰，表情扭曲，闭上了眼睛。双拳紧握，两腿一软，重重地跪在地上。